Simplified measurement of steam boiler efficiency
19 May 2015
The Spirax Sarco B850 flow computer, aims to offer steam system operators the ability to accurately measure true boiler efficiency without the need for building management SCADA systems.
Steam system operators typically use burner efficiency to indicate boiler efficiency. However, this ignores energy losses that can occur after the burner, such as scaled or dirty heat transfer surfaces or excessive boiler blowdown rates. The only way to obtain true boiler efficiency is to meter all energy into the boiler (in the gas and feed water) and compare this with the useful energy out of the boiler (in the steam).
The B850 flow computer is an all-in-one unit that uses input data from gas, water and steam flowmeters to calculate the energy efficiency of the boiler system without the need for additional equipment.
The unit is able to display real-time and historical data to allow for the detection of drops in boiler efficiency and to rapidly identify their causes.
The B850 flow computer is compatible with all Spirax Sarco flowmeters – including the new ELM10 electromagnetic flowmeter for measuring fluid flow – and comprises standard 4-20mA pulse, BacNet, Modbus RTU and Modbus TCP/IP outputs for easy integration into existing BMS/IT systems. It is easily commissioned via PC-based software using a setup wizard, ensuring minimal downtime.
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